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How many pins does port D support ATmega328P?
Port B and Port D are digital ports and have 7 pins each. So, in total ATmega328 has 14 digital pins. It also supports Serial Communications, we can perform serial communication via Pin # 2 (RX) and Pin # 3 (TX).
How many pins of Atmega328 are accepted interrupts?
These 23 pins are divided into three (3) interrupt groups (PCI 2:0) of eight (8), seven (7) and (8). Consequently to enable and individual pin change interrupt 3 interrupt mask bits must be set to one (1). The pin change interrupt enable bit (PCIE 2:0) group the pin is assigned.
How many I / O pins does the ATmega328 have?
The Atmega328 has 28 pins. It has 14 digital I/O pins, of which 6 can be used as PWM outputs and 6 analog input pins. These I/O pins account for 20 of the pins. The pinout for the Atmega328 is shown below. The table below gives a description for each of the pins, along with their function. As stated before, 20 of the pins function as I/O ports.
How are the ADC channels used in ATmega328P?
In ATmega328P there are 6 ADC channels that can be used to convert the analog signal to digital. The analog converter needs to be activated first by its power pin (AVCC). The ADC channels use power supply voltage as a reference to differentiate the different levels of the analog signal.
How to reset an ATmega328P microcontroller using external signal?
RESET: In ATmega328 there is some reset to restart the microcontroller in some conditions. In all of these resets there is an external reset to reset the device using an external signal: POWER: Every controller needs the power to operate and it always has a power input pin. In ATmega328P the power pins are three in number.
What makes ATmega328P IC different from other ICs?
It is designed by 8-bit CMOS technology and RSIC CPU which enhance its performance and its power efficiency get improved by auto sleeps and internal temperature sensor. This ATmega328P IC comes with internal protections and multiple programming methods which helps the engineers to priorities this controller for different situations.